baber/WOPTO huggingface dataset:
Patent FR-2263842-A1 (FR)
Title: Automatic machine for shooting sand moulds and cores - suitable for both shell moulding and the cold-box process
IPC: B22C15/24
Filed: 1974-03-15
Abstract: In a machine for the mass prodn. of foundry moulds and cores using a mixt. of sand and a hardenable binder contained in a vertical shooter located beneath the moulding box, the mixt. being blown into the box by compressed air feed into an expansion chamber fitted underneath the shooter, the base of the shooter contains holes which connect the shooter to the expansion chamber and the holes are fitted with discs having a fine porosity. The discs pref. consists of a sintered powder and the base of the shooter pref. consists of a sintered powder and the base of the shooter pref. consists of a cast metal plate, the porous discs being inserted in the mould when the plate is cast. The expansion chamber is pref. linked to a source of low-pressure gas which fluidises the sand mixt. and high-pressure gas used to fill the mould or core box. Machine is suitable for either shell-moulding or cold box process. It fluidises the sand-binder mixt. so the shooting of pasty mixture is simplified.
Patent FR-2273997-A1 (FR)
Title: Liquefied petroleum gas gaseous distribution system - has hydro-pneumatic pump passing liquid from reservoir to vaporiser
IPC: F17C7/04
Filed: 1974-06-10
Abstract: The system, for gas such as butane, has a main reservoir connected at the top to user equipment by a pipe incorporating a main reducer valve and constituting the main distribution circuit. A secondary distribution circuit supplies user equipment with gaseous butane when ambient temperature no longer allows the reservoir to do so. The feed port of a vaporiser is regulated by a valve dependent on the liquid level in the vaporiser, and liquid butane is delivered from the reservoir base to the vaporiser by a hydro-pneumatic pumpin set mounted between two gas sources at different pressures. A regulator unit brings the secondary circuit into use when the pressure in the first circuit falls below a predetermined value.
Patent FR-2233243-A1 (FR)
Title: Expanded plastics packaging insert - layer of mechanically stronger material forms seating for fixing screw head
IPC: B65D25/10
Filed: 1974-06-12
Abstract: A packaging insert for small objects, e.g. small model motor cars, has a base and back piece made of, for example, expanded polystyrene or other expanded plastics. The back and base have faces at right angles suitable for fitting inside a box. To secure the object, the base has a protrusion on which the object sits, and there is a hollow on the bottom of the base beneath this plinth. A fixing screw passes through the expanded plastics and holds the object in position. A layer of harder material corresponding in shape to the section of the hollow is used for the head of the screw to bear against.
Patent FR-2244296-A1 (FR)
Title: Control for sync. machine DC-AC converter - has integrator for frequency-to-voltage converter output under control of rotor position pulses
IPC: H02P25/024
Filed: 1974-09-19
Abstract: The control circuit for a synchronous machine rectifier, has three outputs of a pole position generator each passed over pulse shaping logic to control an integrator. Each integrator is coupled to the output of a frequency to voltage converter which converts the shaping logic pulse sequence into a voltage for integration. The integration of the frequency to voltage converter output takes place over the duration of each pulse, appearing at the pulse shaper output. The integrated signals are compared with a variable reference voltage and the result used to control the rectifier thyristors via further logic circuitry. Each pulse shaping circuit contains two monostable flip-flops and an output OR-gate.
Patent FR-2287137-A1 (FR)
Title: Generation of TV control signals - using digital sequential circuits in circuit which combines divided down signals
Inventor: FOLDESI ISTVAN
IPC: H04N5/067
Filed: 1974-10-04
Abstract: An output from a base fequency generator is applied to the circuit input (6) which is frequency divided (OS) to obtain twice the line frequency. This signal is applied to a delay circuit shift register (KLS) to produce a number of delayed outputs (1-n) when switched (L) by the base frequency. Signals at twice line frequency are sent via blocking circuit (GL) to an image frequency divider (OK). The blocking circuit ensures operation of several generators at the same frequency and phase. An image frequency delay shift register (KLK) produces a number of output (1-n) frequencies which are combined (K) to provide synchronous outputs.
Patent FR-2287133-A1 (FR)
Title: Magnetic amplifier operating in push-pull mode - has two magnetic cores and several sets of windings for small DC signals
IPC: H03F9/02
Filed: 1974-10-04
Abstract: The magnetic amplifier is used for direct current signals of the order of several millivolts or of the order of a fraction of a millivolt. It comprises two magnetic cores, each provided with a primary winding, connected in series opposition across an alternating current, via a limiting resistor. The two cores are also provided with a winding across which the signal to be amplified is supplied, an output winding, for recovering the amplified signal and a counter reaction winding. The output winding is preferably connected to a resistor via a non-linear element, e.g. two cross-coupled transistors. The magnetic characteristics of the two cores are exactly matched.
Patent FR-2249053-A1 (FR)
Title: Slag wool contg. adsorbed aluminate ions - as protection against alkaline reaction of cement when used in insulating coatings
IPC: E04B1/62
Filed: 1974-10-25
Abstract: Fire-protective, sound-proofing and insulating coating compsns contain slag wool or esp. mineral wool impregnated with an aluminate coating and contg. aluminate ions adsorbed on fibre surface, to act as a protection against alkaline reaction of cement, used as binder, in presence of moisture e.g. water admixed no more than a few hrs. before or esp during coating. Used as replacement for asbestos fibre-contg. insulating coating compsns applied, e.g. sprayed, on building units or insulator carriers, e.g. pre-fabricated panels or moulded units. The aluminate appreciably reduces alkaline attack; protected fibres do not tend to agglomerate.
Patent FR-2293032-A1 (FR)
Title: Speed change control for record player turntable - with drive belt on stepped pulley controlled by lever
IPC: G11B19/26
Filed: 1974-11-26
Abstract: The turntable drive is provided by a drive belt(2), which passes around a pulley wheel(3), formed with a number of grooves(3a, 3b, 3c) of different diameter. An element(4) is movable orthogonal to the axis of the pulley to transfer the drive belt(2) from one pulley groove(36) to a second groove(3a, 3c). This element(4) is in the form of a bar, with a slot for the drive belt (2) and fixed to a plate, which slides to cause the element(4) to transfer the drive belt(2), via operation of a control lever. The slot of the end of the transfer element(4) forms a double cam, the opposing sides of the slot(14, 15) forming two inclined cam faces.
Patent FR-2298058-A1 (FR)
Title: Signal lamp unit - has housing and lampholder secured together on opposite sides of reflecting panel
IPC: F21V17/06
Filed: 1975-01-14
Abstract: The signal lamp unit is mounted on a panel and comprises an external housing and a lamp holder on opposite sides of the panel which is thus sandwiched between them. The housing (11) and the holder (2) are fixed to each other, the panel (3) being clamped between them an independently of them. The only openings in the panel are those for the bulb and fixing devices, so that the outer panel surface can act as a reflecting surface. A boss (9) in the centre of the lamp holder can act against the panel so as to determine the position of the bulb (4) in relation to it.
Patent FR-2298740-A1 (FR)
Title: Control mechanism for diesel engines - is used with engines connected to automatic gearboxes with feedback for variable load on engine
IPC: F16H59/18
Filed: 1975-01-22
Abstract: The throttle pedal(1) is connected to a link mechanism(6) which is pivoted around a fulcrum(7). The free end of the lever is joined to two flexible cables. The first flexible cable is joined through a bulkhead(15) to an injection pump so that depressing the pedal increases the flow to the injection pump. The second cable, operates a bell crank lever pivoted about an axis(26) and connected to a second cable(32) and to an operating lever which actuates the hydraulic valve. This valve in the hydraulic control of the automatic gear box corrects for the load variation on the engine.
Patent FR-2308526-A1 (FR)
Title: Vehicle mounted obstacle detector - has rubber rotating arm with electrical contacts to sense rotation
IPC: B60Q1/48
Filed: 1975-04-24
Abstract: The obstacle sensor is mounted onto the rear of the vehicle body (1) by a stub and securing pins (3, 4). The rubber arm (9) is fixed to a bush (8) which rotates on an arm (6) about a cylindrical spindle (7). The sensor is used in parking manoeuvres. When the pad (10) hits a stationary object, the arm (6) rotates causing an electrical current to pass across the contacts (11, 12) to illuminate driver warning light. spring (17) returns the arm to its protruding position when the pad is no longer touching the obstacle. When not in use, the mechanism can be retracted by a cable (16), which rotates it about a vertical axis (5) to lie flush with the vehicle body.
Patent FR-2308762-A1 (FR)
Title: Site erected silo with telescoping sections - is extended by crane or by hoist at top of steel frame
IPC: B65D88/26
Filed: 1975-04-22
Abstract: The silo is built in telescoping sections (1, 3) of successively increasing dia. It is transported in the compact retracted form, and on site a crane is used to erect the structure vertically. For sites which are inaccessible to cranes a steel frame (4) may be used to house the silo. Telescopic extension is then achieved by means of a hoist (7, 8) operating from the top (6) of the frame. The frame is a portal with concrete foundations (5) and diagonal bracing (9, 10). The silo has chutes, loading holes, and a discharge hopper, and may have any geometrical cross-section shape.
Patent FR-2293891-A1 (FR)
Title: Dish-shaped machine brush - has hollow body or steel plate
Inventor: REISLANDER KONRAD
IPC: A46B13/00
Filed: 1975-05-02
Abstract: The brush is for use as an intake or pavement strip brush on a street-sweeping machine, having a dish-shaped body for fixing to the driving head with bristles on the working side. The body (1) is hollow and of steel plate. It can consist of two dishes of plate, that on the working side carrying the bristles, while the other acts as a cover on the driving head side, the dishes being jined together along their edges. The brush carrier dish (1) and the cover dish (15) can be symmetrical in construction, joined to each other at the centre as well as along the edges.
Patent FR-2275031-A1 (FR)
IPC: H05B33/00
Filed: 1975-06-12
Abstract: 1503545 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 June 1975 [12 June 1974] 24621/75 Heading H1K An electroluminescent semi-conductor device has a monocrystalline semi-conductor body 1 of a III-V compound and comprises a doped region 2 which forms a PN junction 4 with an adjacent region 3, and a tin-doped indium oxide current conducting layer 5 whose sheet resistance is at most one third that of the doped region 2. The layer 5 forms a transparent electrode on a silicon oxide or nitride layer 6 and in an aperture 7 therein. A gold wire 9 is contacted with a bismuth oxide layer on the indium oxide layer 5 by thermocompression bonding. In an alternative embodiment the doped region 2 extends over the entire surface of the semiconductor body 1.
Patent FR-2274456-A1 (FR)
Title: Desensitising pressure-sensitive recording sheets - using etherified or esterified adducts of ammonia or amines with alkylene oxides
IPC: B41M5/025
Filed: 1975-06-13
Abstract: Desensitiser for pressure-sensitive recording sheets consists of >=1 reaction prod. (I) having av. mol. wt >=500 and prepd. by (1) addn. of ethylene oxide and/or propylene oxide to NH3, alkylamines, alkylene amines, alkenyl amines arylamines or cyclic amines, until no more active H is present in NH3 or amines, and then (2) etherifying or esterifying >=25 (>=50)% of terminal OH gps. of adduct chain formed with at least one oxiran deriv. such as glycidyl ethers, glycidyl esters, alkylene oxides and aromatic oxiran derivs. at least one alkyl halide or at least one acyl halide. Used esp. for spot-desensitising sheets sensitised with acid reactants as colour-formers, acting as electron acceptors in a colour-forming reaction between an electron donor and an electron acceptor. (I) are water-repellent, odourless, have good solubility in carrier for printing ink compsns. high stability and resistance to migration even at high temps. and humidity. Desensitising is complete. No colour image is formed on sheet, not even under applied press.
Patent FR-2275232-A1 (FR)
Title: Spring actuated ski binding - with constantly decreasing lateral release force dependant on vertical release force
IPC: A63C9/00
Filed: 1975-06-17
Abstract: The binding comprises a sole holder pivotable about a transverse axis and a vertical axis and held in its boot-retaining position by locking means (14-17) which do not yield until given vertical and lateral release forces have been overcome. The locking means are mounted one behind the other so that the lateral release force constantly decreases during movement of the sole holder in the direction of opening, and consist of a piston (14) pivotably attached to the housing and biassed by a spring (19) towards a vertical release track (15) on the sole holder. The track supports a lateral release projection (17) which engages in a recess (22) on the laterally pivotable sole holder portion.
Patent FR-2281638-A1 (FR)
Title: Ceramic capacitor contacting without barrier layer - uses chemical treatment of capacitor body followed by nickel-plating
IPC: H01G13/00
Filed: 1975-08-05
Abstract: The contacting of a ceramic capacitor without barrier layer is carried out by coating the electrode layer with an etching resistant lacquer, followed by chemical treatment of the capacitor body in an acid. Then the capacitor body is treated themically in a lye. This is followed by currentless nickel-plating, followed by coating of deposited metal film in the region of the second capacitor electrode with etching resistant lacquer. Finally the capacitor is etched in an acid and the lacquer is dissolved. The capacitor consists of preferably rectangular nody whose reduced core is surrounded by a reoxidised film, formed by a silver film oxidised by burning and forming the first capacitor electrode.
Patent FR-2323422-A1 (FR)
Title: Theatre presentation combining film images and actors - has players and audience on opposite sides of semi-transparent front projection screen with separate screen and stage lighting
IPC: A63J5/02
Filed: 1975-09-15
Abstract: The stage of the theatre has a screen of fine mesh stretched across the front. This separates the players from the audience in the theatre. Above the screen, on the players' side, are lights illuminating the stage, but not the screen. At the foot of, and in front of, the screen are other lights, controllable to illuminate the screen. Film projectors are located behind the audience and project images on the screen. This screen is partially reflecting and partially transparent and, depending on the relative lighting levels on each side, the audience see as part of, or separate from, the screen depicted.
Patent FR-2326056-A1 (FR)
Title: Electric cable grip for two cables - has two U-shaped clamps and has grooved separator with grooves for clamp ends
IPC: H01R4/18
Filed: 1975-09-26
Abstract: An electric cable grip is used to hold two separate cables. It can accommodate cables with wide dimensional tolerances. The cable grip has two separate clamps (1, 2). These clamps (1, 2) are 'U' shaped and made of aluminium alloy. The extremities (3, 4) of each clamp (1, 2) are bent. These bent extremities (3, 4) fit into slots (9, 10) of a separator (6). The separator (6) is shaped to accommodate the contour of the cables. The slots (9, 10) have a trapezoidal bent extremities (3, 4) have a an inclined face (3", 4") to mate with the inclined faces of the slots. The clamps (1, 2) and the separator (6) have small grooves (5, 15) to allow any excess of grease.
Patent FR-2330824-A1 (FR)
Title: Built up girder for metal framework - has two parallel flanges interconnected by U-shaped braces screwed to them
IPC: E04C3/04
Filed: 1975-11-10
Abstract: The girder consists of two parallel flanges (1) interconnected by U-shaped braces (2) with splayed-out sides (5, 6). The flanges (1) consist of rectangular or square sections made of light metal such as aluminium. Each side has a half-closed lengthwise groove with rims (4). Each brace (2) consists of a flat bar with the free ends (7) bent outwards parallel to the base (8) of the U. The braces are joined to the two flange sections by screws (10) screwed into a roughly rectangular head to form a bolt. The head of the fixture can be inserted into the grooves (3) of the flange sections (1) at one end, to hold it tight.
Patent FR-2344948-A1 (FR)
Title: Release mechanism for contact breaker - has permanent magnet lock and electromagnet to release armature and striking pin
IPC: H01H71/32
Filed: 1976-03-15
Abstract: A release mechanism with magnetic lock is used in electrical contact-breaker. It has a good amplification factor. The release mechanism has an annular armature (36) fitted to a striking pin (16). The armature (36) is in contact with two coplanar pole faces (40, 42) separated by an airgap (44). A permanent magnet (48) is fitted onto a sleeve (28) and has a force greater than the force of a coil spring (24) to hold the armature (36) against the pole faces (40, 42). A coil (52) is used to release the armature (36), and the striking pin (16). The armature (36) the sleeve (28) the pole piece (46) are made of ferrous materials. The striking pin (16) is made of plastic material.
Patent FR-2318512-A1 (FR)
Title: Bandpass filter for waveguides - has two equal groups of cavities supporting same one mode interconnected by slots (SW 29.11.76)
IPC: H01P1/208
Filed: 1976-04-30
Abstract: The bandpass waveguide filter consists of an even number of waveguide cavities each of which is connected to a shared central frequency. The cavities are arranged in two equal, interconnected, adjacent groups. Couplers connect the cavities within a group to one another. A second set of couplers connects together adjacent cavities in the two groups in one sense, whilst a third set connects these same cavities in the opposite to sense. Each of the cavities supports only the one mode. All couplers consist of slots.
Patent FR-2311773-A1 (FR)
Title: Water soluble aliphatic azo cpds. prepd. from azo halopropanes - used as aq. phase polymerisation initiators and flame proofers
IPC: C08J9/00
Filed: 1976-05-13
Abstract: Water-soluble aliphatic azo cpds. of formula (I) are new: QOOC-A-C(CH3)2-N=N-C(CH3)2-A-COOQ (I) (where A is a methylene gp. or an opt. unsatd. 1,1-C2 or 1,2-C2 gp., each gp. A being opt. substd. by a COOQ gp.; Q is H or Na, K or ammonium cation).
Patent FR-2350929-A1 (FR)
Title: Spanner with attached impacting hammer - has arm carrying inertia weight and pivoted to spanner near fastener axis
Inventor: BERTHILLIER RENE
IPC: B25B19/00
Filed: 1976-05-13
Abstract: The pivoting hammer accessory is for use with spanner and may adopt different forms for use with a brace-spanner, a plane double headed-spanner or a box spanner resp. The accessory pivots about the axis or an extension of the axis of the subject nut or bolt, and applies a hammer-torque through the medium of the primary spanner. In the case of a crank handled brace-spanner (3) the tool (2) has a right angled 'Z' shape with a weight (12) and an axial fork (7) at opposed ends. The fork (7) fits over the brace handle (8) close to the socket head (9) and the accessory (2) is pivoted successively to apply hammer blos to the offset length (10) of the brace (2) handle.
Patent FR-2352906-A1 (FR)
Title: Weft feeder for lance type shuttleless loom - esp. for ribbon-like materials, with compensator feeding weft flat and tensionless
IPC: D03D47/34
Filed: 1976-05-25
Abstract: A weft feeder for a shuttleless loom of the type in which the weft is inserted into the shed by a lance, has a support point for a supply spool from which the weft is drawn off and fed forward positively. The length of weft between the feeder and the inserter is supported by a compensating arm controlling the circuit for starting and stopping the feeder motor, and for pref. also for controlling its speed. Guides present the weft correctly to the clamp of the insertion lance. The compensating arm pivots at a fixed point in a vertical plane passing through the axis along which the weft is inserted. It is positioned above the feeder and the plane of the fabric, and carries guides for the weft. The tension applied when the weft is inserted, pivots the compensator arm which acts on the feed motor circuit. The motion of the arm is limited by two stops; the arm being pulled against one in the position of rest by a spring. The tip of the arm may be flexible or it may be rigid throughout its length. A sec. compensator attached flexibly to a fixed point beneath the main compensator, enables the weft to follow an undulating path. Appts. delivers the weft, esp. partic. types of weft such as ribbons of rubber or plastic, chenille and slub yarns, etc. at a constant tension as low as possible, and in the case of ribbons, perfectly flat, to the insertion lance of a shuttles loom.
Patent FR-2357913-A1 (FR)
Title: Determn. of emittance of beam of charged particles - permitting beam of predetermined dimensions to be obtd. at zone of utilisation
Inventor: TRAN DUC TIEN
IPC: G01T1/29
Filed: 1976-07-07
Abstract: Determn. comprises measuring the max. elongation of the beam at two points in its trajectory, one downstream of the other, and the max. elongation at the downstream point when the beam is subjected to the action of a quadripolar lens of convergence C placed near the upstream point, the distance between the lens and the downstream point being equal to 1/C. The appts. consists of a first measuring system, giving the max. elongation at a point P1 in a plane Q perpendilar to the trajectory along a specified axis X1X1. A second measuring system gives the max. elongation at a point P2 downstream of P1 in a plane parallel to plane Q and along an axis X2X2, parallel to X1X1. A magnetic lens is present of the quadripolar type. Any system of guiding the beam can be regulated, in an optimum way, to obtain in the area of utilisation, e.g. a target, a beam of predetermined dimensions.
Patent FR-2357910-A1 (FR)
Title: Doppler effect radionavigation system for aircraft landing - has integrator circuits in receiver to eliminate parasitic disturbances
Inventor: DOREY JACQUES
IPC: G01S1/40
Filed: 1976-07-08
Abstract: A Doppler effect radionavigation system is used as an aircraft landing aid. Disturbances due to parasitic transmissions are eliminated by processing received signals. Several integrators in the receiver are switched in succession at a rate relative to the difference in displacement of the two transmission sources. A radionavigation receiver comprises a linear receiver (12) followed by a non linear element (14). A filter (15) eliminates pulsation frequencies and a capacitor (18) eliminates d.c. components. A coherent integrator (34) comprises several integrators (22) which are switched into circuit by an electric switch (23) at a period equal to the sweep duration of the mobile transmission. A second channel (33) provides a control signal which defines integration time for the integrator capacitors dependent on received signal amplitude.